diff options
| author | Matthias Krüger <476013+matthiaskrgr@users.noreply.github.com> | 2025-05-21 22:14:58 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-05-21 22:14:58 +0200 |
| commit | b9c6b337cec34c71369d3d0df6f91f2032383f20 (patch) | |
| tree | 1776f4808afde99841cd73ab342d8d6838f1217b /library/std/src/ffi | |
| parent | b5edec2811221a3939cac034516e8cd7c24b8271 (diff) | |
| parent | d8a22a281cc20dc58f1da62be02048622392da05 (diff) | |
| download | rust-b9c6b337cec34c71369d3d0df6f91f2032383f20.tar.gz rust-b9c6b337cec34c71369d3d0df6f91f2032383f20.zip | |
Rollup merge of #141341 - folkertdev:limit-VaArgSafe-impls, r=workingjubilee
limit impls of `VaArgSafe` to just types that are actually safe tracking issue: https://github.com/rust-lang/rust/issues/44930 Retrieving 8- or 16-bit integer arguments from a `VaList` is not safe, because such types are subject to upcasting. See https://github.com/rust-lang/rust/issues/61275#issuecomment-2193942535 for more detail. This PR also makes the instances of `VaArgSafe` visible in the documentation, and uses a private sealed trait to make sure users cannot create additional impls of `VaArgSafe`, which would almost certainly cause UB. r? `@workingjubilee`
Diffstat (limited to 'library/std/src/ffi')
| -rw-r--r-- | library/std/src/ffi/mod.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/library/std/src/ffi/mod.rs b/library/std/src/ffi/mod.rs index 56791609910..024cb71b915 100644 --- a/library/std/src/ffi/mod.rs +++ b/library/std/src/ffi/mod.rs @@ -172,7 +172,7 @@ pub use core::ffi::c_void; all supported platforms", issue = "44930" )] -pub use core::ffi::{VaList, VaListImpl}; +pub use core::ffi::{VaArgSafe, VaList, VaListImpl}; #[stable(feature = "core_ffi_c", since = "1.64.0")] pub use core::ffi::{ c_char, c_double, c_float, c_int, c_long, c_longlong, c_schar, c_short, c_uchar, c_uint, |